Preparation and Characteristics of SiOx Coated Carbon Nanotubes with High Surface Area
<p>Schematic diagram of the SiO<sub>x</sub> coated carbon nanotubes (SiO<sub>x</sub>-CNT) preparation by Polycarbomethylsilane (PS) coating and heat treatment.</p> "> Figure 2
<p>SEM images of (<b>a</b>) pristine CNTs, (<b>b</b>) SC104, (<b>c</b>) SC105, (<b>d</b>) SC107, (<b>e</b>) SC204, and (<b>f</b>) SC304.</p> "> Figure 3
<p>TEM images of (<b>a,b</b>) pristine CNTs, (<b>c,d</b>) SC103, (<b>e,f</b>) SC104, (<b>g,h</b>) SC107.</p> "> Figure 4
<p>(<b>a</b>) Nitrogen isotherm and (<b>b</b>) pore size distribution curve of SiO<sub>x</sub>-CNT samples (48.8 wt % SiO<sub>x</sub>) treated at different temperatures (300 °C, 400 °C, 500 °C).</p> "> Figure 5
<p>Si-2p XPS profiles of PS and SiO<sub>x</sub>-CNT samples.</p> "> Figure 6
<p>C-1s XPS profiles of CNT and SiO<sub>x</sub>-CNT samples.</p> "> Figure 7
<p>XRD profiles of CNT, PS-CNT and the SiO<sub>x</sub>-CNT according to treatment temperature.</p> ">
Abstract
:1. Introduction
2. Experimental Section
2.1. Chemicals
2.2. Preparation of SiOx-CNT
2.3. Characterization
3. Results and Discussion
3.1. Morphology of SiOx-CNT Composites
3.2. Surface Properties of SiOx-CNT
Sample | Content (wt %) | Heat treatment conditions | Specific surface area (m2/g) | Total pore volume (cm3/g) | |
---|---|---|---|---|---|
SiOx | CNT | ||||
CNT | 0 | 100 | – | 198 | 0.372 |
SC103 | 48.8 | 51.2 | 300 °C, air, 2h | 261 | 0.199 |
SC104 | 48.8 | 51.2 | 400 °C, air, 2h | 352 | 0.253 |
SC105 | 48.8 | 51.2 | 500 °C, air, 2h | 405 | 0.273 |
SC107 | 100 | 0 | 700 °C, air, 2h | 671 | 0.768 |
SC203 | 32.1 | 67.9 | 300 °C, air, 2h | 214 | 0.317 |
SC204 | 32.1 | 67.9 | 400 °C, air, 2h | 315 | 0.388 |
SC205 | 32.1 | 67.9 | 500 °C, air, 2h | 335 | 0.357 |
SC303 | 26.9 | 23.1 | 300 °C, air, 2h | 220 | 0.344 |
SC304 | 26.9 | 23.1 | 400 °C, air, 2h | 250 | 0.384 |
SC305 | 26.9 | 23.1 | 500 °C, air, 2h | 328 | 0.434 |
3.3. XPS Analysis of the Chemical Status of the SiOx-CNT Composites
3.4. XRD Analysis of the SiOx-CNT Composites
4. Conclusions
Acknowledgments
References
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Kim, A.; Lim, S.; Peck, D.-H.; Kim, S.-K.; Lee, B.; Jung, D. Preparation and Characteristics of SiOx Coated Carbon Nanotubes with High Surface Area. Nanomaterials 2012, 2, 206-216. https://doi.org/10.3390/nano2020206
Kim A, Lim S, Peck D-H, Kim S-K, Lee B, Jung D. Preparation and Characteristics of SiOx Coated Carbon Nanotubes with High Surface Area. Nanomaterials. 2012; 2(2):206-216. https://doi.org/10.3390/nano2020206
Chicago/Turabian StyleKim, Aeran, Seongyop Lim, Dong-Hyun Peck, Sang-Kyung Kim, Byungrok Lee, and Doohwan Jung. 2012. "Preparation and Characteristics of SiOx Coated Carbon Nanotubes with High Surface Area" Nanomaterials 2, no. 2: 206-216. https://doi.org/10.3390/nano2020206